Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7007268 | Chemical Engineering Research and Design | 2015 | 44 Pages |
Abstract
Slug flow characteristics in highly viscous liquid and gas flow are studied experimentally in a horizontal pipe with 0.074Â m ID and 17Â m length. Results of flow regime map, liquid holdup and pressure gradient are discussed and liquid viscosity effects are investigated. Applicable correlations which are developed to predict liquid holdup in slug body for low viscosity flow are assessed with high viscosity liquids. Furthermore, a mechanistic model is developed for predicting the characteristics of slug flows of highly viscous liquid in horizontal pipes. A control volume is drawn around the slug body and slug film in a slug unit. Momentum equations with a momentum source term representing the significant momentum exchange between film zone and slug body are applied. Liquid viscosity effects are considered in closure relations. The mechanistic model is validated by comparing available pressure gradient and mean slug liquid holdup data produced in the present study and those obtained from literature, showing satisfactory capabilities over a large range of liquid viscosity.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Filtration and Separation
Authors
Y. Zhao, L. Lao, H. Yeung,